package com.win.filter;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Slf4j
@Component
public class MyGlobalFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
        String uri = request.getURI().toString();
        long start = System.currentTimeMillis();
        log.info("请求【{}】开始时间：【{}】",uri,start);
//        以上是前置逻辑

        Mono<Void> filter = chain.filter(exchange).doFinally((result) -> {
//            以下是后置逻辑
            long end = System.currentTimeMillis();
            log.info("请求【{}】结束时间：【{}】，耗时：【{}】ms",uri,start,end-start);
        });
        return filter;
    }

    @Override
    public int getOrder() {
        return -1;
    }
}
